Press-roll for paper-making machines.



I 1. A. WHITE.

PRESS ROLL FOR PAPER MAKING IVIACHENES."

APPLICATION FILED DEC. I. 1916.v

Patented Apr. l0. 19117.

ltlldl i? nien. l

JOSEPH ATWOOD WHTE, OF PHILADELPHIA, PENNSYLVANIA, A-SSIGNOR TO THE MOORE AND WHITE COMPANY, F PHILADELPHIA, PENNSYLVANIA, A COR- ?GRATION OF PENNSYLVANIA.

PRESS-RLL FOR PAPER-MAKING MACHINES.

Specification of Letters Patent.

Patent-,ea Apr. 10,1917.

Application led December 1, 1816. Serial No. 134,307.

. lowing is a specification.

One object of niv invention is to improve the construction of press rolls.v particularly those used in paper machines, so that the roll `will not deflect at the center under pressure.

further object -of the invention is to construct the roll so that it will be supported on its shaft some distance from each end in order to keep the face of the roll in au absolutelvY straight: line so that the pressure will be the saine from one end of the roll to the other.

A' still further object of the invention is to provide for a slight movement where the' shaft supports the shell.

ln the aceon'ipanving drawings:

Figure l is a longitudinal sectional view of my improved press roll;

Fig. 2 is an enlarged longitudinal sec tional view ofone end ofthe roll;

Fig. 3 is a sectional view on the line 3-3. Fig. 2; and

Fig. 4 isa sectional 'view showing means for lubricating the bearings.

Referring to the drawings, l is the shaft on which the shell Q of the press roll is mounted. T his shaft has trunnions 3 at each end. The shaft, in the present instanee..is greater in diameter at the center than at the trunnions and has a tapered section 5 at each end connecting with a section (3 of even diameter. Keyed to each of these sections 6 is a ring 7 which must turn with the shaft. The periphery of each of these rings 7 is slightly rounded. as cli-Pari)7 shown in the drawings, and the shell has a coinlnu'atively neat lit at this point on the rings. Fitting within each end of the shell is a ring 8,.

which is keyed to the shell and connecting this ring and the ring 7 is a flexible coupling in the forni of a shell 9, which encircles the shaft and fits snugly on the portion 6 of the shaft and within the ring` 8 secured to the shell. Any suitable fastening* are provided so that the flexible couplings will turn with the shaft and with the ring 7 and will turn the shell Q. i

4, 4 are caps which are secured to the shaft at cach end and bear against the ends of the shell so as to prevent independent longitudinal movement of` the parts. The caps also prevent dust and dirt from entering the space-between the roll and the shaft. The roll consists of two sections, in the present instance, a cast body portion 10 and a face section 11 of rubber ornietal, which is.

turned true. The usual practice is to run two of these rolls'together under heavy pressure on the trunnions, and it will be noticed that the shaft 1 supports the roll at a distance froin each end so that the shaft ina)Y deflect considerably without affecting thc face of the roll, the objectbeing to keep the face of the roll in`an absolutely straight line so that 'the pressure will be the saine from one end of the roll to the other.

It will be noticed that the shell has a comparatively loose fit on the ring 7 mounted on the shaft-and is driven through the long coupling sleeves 9 so that the shaft mayY he considerably deflected without affecting the face of the roll, but this driving connection is substantial and will resist the strains to which the roll is subjected.

ln order to lubricate the bearings properl)7 between the ringf and the shell. Tmay locate a series of grai'ihite plugs 12 in the lrings. as shown in Fig. 4.

I claim I y 1. The combination in a press roll, of a shaft; a shell mounted thereon and forming the body of the roll, said shell bearing upon the shaft soine distance from each end; and couplings connecting the shell withv the shaft.

Q. The combination in a press roll` of a shaft having bearing portions some distance from its ends; a shell loosely mounted on the bearing portions: and couplings at each end of the roll connecting the shell with the a shaft extending through the shell and having a trnnnion at each end; two rings secured to the shaft, each ring being located some distance from the end of theV roll; a ring secured to the shell near each end; and

a tubular coupling connecting the two rings vso that they shell is driven through the couplings from the sha-ft.

5. The combination in a press roll, of a 4tubular shell; a shaft considerably less in 10 diameter than the interior of the shell and having two rings secured thereto some diftance from the end of the shell,4 the periphery of each ring being rounded and thel bearing portion of the shell being flat; tubular couplings connecting the lshell near its outer end With the rings on the shaft so that theshell will turn with the shaft, but will have a slight movement thereon.

i JosErH A'rvvoon WHTE. 

